Which is an equivalent form of f(x)+g(x)?

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

What properties allow transformation to be used as a problem solving tool

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4